stile v0.1 import fails: 'treecorr.corr2' removed in newer treecorr

[cailmdaley]

Symptom

4 shapepipe modules fail to import:

• shapepipe.modules.mccd_package.mccd_plot_utilities
• shapepipe.modules.mccd_plots_runner
• shapepipe.modules.random_cat_package.random_cat
• shapepipe.modules.random_cat_runner

Traceback ends:

File ".../stile/treecorr_utils.py", line 8
ModuleNotFoundError: No module named 'treecorr.corr2'

Root cause

The Dockerfile pins treecorr==5.1.1 and installs stile @ git+https://github.com/tobias-liaudat/Stile@v0.1. treecorr 5.x flattened its namespace and removed the treecorr.corr2 submodule; stile v0.1 still imports it.

Options

1. Bump stile to a newer version (if one exists that supports treecorr 5.x). Check Stile upstream.
2. Pin treecorr<5 in the Dockerfile. Regresses other modules that rely on treecorr 5 features (if any).
3. Fork stile and patch the import.

Caught by

tests/unit/test_imports.py for the 4 modules above (xfailed in #708).